ASME B16.47 Series A/MSS SP-44 Class 600 WN

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available because of its inherent structural value. It is expensive because of the design.

Norminal Pipe SizeO.D.of Flange, OMin.Thick-ness of WN Flange, tfLenth Through Hub, YDiam. of Hub, XHub Diam. Top, ARaised Fase Diam., RBore (XS)Diam of Bolt CircleNo.of Bolt HolesDiam.of Bolt HoleMin.Fillet Radius, r1Approxi-mate Weight kgs
261015108.0222748660.4749635.0914.42850.813441.66
281075111.2235803711.2800685.8965.22854.013500.13
301130114.3248862762.0857736.61022.42854.013564.95
321195117.5260918812.0914786.61079.52860.313636.04
341245120.7270973863.6965838.21130.32860.314694.71
361315123.92831032914.41022889.01193.82866.714787.50
381270152.42541022965.21054939.81162.02860.314665.35
401320158.826410731016.01111990.61212.83260.314713.76
421405168.327911271066.811681041.41282.72866.714887.56
441455173.128911811117.612261092.21333.53266.714939.98
461510179.430012351168.412761143.01390.63266.7141036.58
481595189.031612891219.213341193.81460.53273.0141236.72
501670196.932913431270.013841244.61524.02879.4141436.50
521720203.233713941320.814351295.41574.83279.4141504.69
541780209.634914481371.614921346.21632.03279.4141661.71
561855217.536215021422.415431397.01695.43285.7161867.92
581905222.337015531473.216001447.81746.23285.7161976.20
601995233.438916101524.016571498.61822.42892.1172378.47

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